Which Of The Following Best Describes The Concept Of A Vlan?

Which of the following best describes the concept of a VLAN?

1. It is the device on different networks on which various packets are received.
2. The devices are present on the same network but logically linked the way they were working on the separate network.
3. These are the devices that without the use of network addresses can communicate through the help of the internet.

Answer: The correct answer is option 2 which describes that VLAN is the devices present on the same network but logically linked the way they were working on the separate network.

VLAN concept describes that in this process the device is divided logically on the data link layer of the OSI model. The devices on the network layer divide the broadcast domain with the help of the concept of VLAN. The broadcast is the process in which one device is designated for the packet all of the devices connected will also receive the packets. This receival of the packets is limited to only switches and the router might not be able to send the packets, for that we need the inter VLAN routing. With the help of the VLAN, various small-sub-networks which are different from each other are formed which are quite easy to handle.

For the connection with VLAN, there are possible three ways and the connection depends on the devices which are connected such as they are either VLAN-aware (VLAN-aware must know about the formats) or VLAN unaware (these are not aware of the formats and memberships). The VLAN connections are discussed in the following:

Trunk link

The devices along with the connection with the trunk link are VLAN-aware. The packets on this connection must have the attached header known as the tagged frames.

Access link

The purpose of this link is to establish the link among VLAN-unaware devices with its bridges. Unlike the trunk link, the frames on it have to be untagged.

Hybrid link

It is the link that combines both the trunk and access link properties. in this, both VLAN-unaware and aware devices are connected and have both frames tagged and untagged.

Ranges:

The ranges of the VLAN are listed below with some works:

• VLAN 0,4095: these are the taken VLAN ranges that can’t be seen and used.
• VLAN 1: it is the default range for the switches, all ports of the switches present in VLAN.it can’t be removed or modified but can be used.
• VLAN 2-1001: it is the general range that can be changed formed, modified, and deleted.
• VLAN 1002-1005: it is the range for the CISCO default and token ring, and they can’t be deleted.
• VLAN 1006-4094: it is considered as the extended range.

Some of the benefits of the VLAN are listed below:

• Performance is improved with the help of it.
• It helps in the formation of virtual groups which helps the data retrieval.
• It is easy to access the control for firewalls, domain without the worry of security.
• It gives flexibility in the creation, modification, etc.
• It helps to reduce the cost by developing the broadcast domains.